derp.
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@ -25,7 +25,7 @@ static int is_valid_hex_digit(char symbol)
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symbol &= ~0x20; /* in ASCII, forces lowercase to uppercase */
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if (symbol < 'A')
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return 0;
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if (symbol <= 'Z')
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if (symbol <= 'F')
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return 1;
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return 0;
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}
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